Pipe-cutter.



H.. H. EATON.

P|PE cuTER, APPLICATION FILED MAY 4. |914,

Patented Dec. l7, 1915.

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HARRISON H.EATON, OF BEVERLY, MASSACHUSETTS.

PIPE-CUTTER.

aisance;

Specification of Letters Patent. Pgtgemitfd D436, Y, i915.

Applica-tion filed may 191%. Sera-l No. $36,046.

To @ZZ wlw/m t may concern: i

Be it known that l, lfl'AnnisoNl-l." EATON, a citizen of the UnitedStates, and resident of Beverly, in the county of Essex and State ofMassachusetts, have invented new and useful 'improvements inPipe-Cutters, of which the following is a specification.

This invention relates to` a pipe-cutter, and its object is to providean improved and simplified hand operated implement for severing pipes byclean cutting action without distorting the pipe or changing itsdiameter adjacent to the line of cut, asusually happens with the toolsnow in common use.

'ifhe invention consists in the novelfeatures of constructionhereinafter described and particularly pointed out in the claims. ln thej accompanying drawings which illustrate one embodiment of theinventiem-Figure l is a side elevation of a pipecutter containing theinvention; and Fig. 2 is a plan view of said pipe-cutter. j

Referring to the drawings, A andB represent al pair of jaws pi-votedtogether at C, each provided with broad pipe engaging holders A. and B,to insurea firm support for the pipe P and prevent it from becomingtwisted or angularlyV displaced while being operated upon by the cutter.l i

D is the handle, pivoted -to the side of jaw A by the bolt D', andprovided with the laterally extending arm D2V and lug D3. IThe arm D2 ismade with a slot running lengthwise of the device, in which are lodged acutting tool lil, which mav be adjusted forward and backward withrelation to the pipe by a set screw F, and the-guide plate il', which isclamped against the tool E by set screw itl, in the end of arm D2. A.clamping bolt d is pivoted to jaw A at K, and swings into engagementwith the forked end 'of jaw B, whereby the jaws may be set up or clampedon to the pipe l), and held in closed position bv thumb screw L. rlfhecutting tool E is adjusted with relation to the guide plate G so thatits cutting` point or edge is a little in advance of the guide toe g ofplate G. rlhe depth of the cut is determined, and may be regulated bythe distance which the point of tool E projects beyond the guide toe g.

ln operation the jaws are placed on the pipe and the thumb screw L isset up on the clamping bolt J until the angular pipe holders A and Bengage the pipe l? firmly enough to prevent any lateral play of the pipein the jaws, and t exert a slight friction on the pipe, butnot enough tointerfere with turning the implement on the pipe.`

rlfhe handle D is then swung upward, or in a clockwise direction, asviewed in Fig. l, turning ou its pivot D `until the cutting tool ilengages the pipe. rllhe cutting edge of the tool ll is transverse of thedirection of cut, and acts after the manner of a plane, or chisel, toremove a co'ntinuousshaving as the tool passes around the pipe. Themereact of swinging the handle in a clockwise direction about the pipe willforce and hold the edge of cutter E in cutting engagement with the pipe,and cut out an annular groove or channel ly, cleanly removing theshaving, and' leaving the severed ends of the pipe sharply cut off andunchanged in diam-eter or otherwise distorted or Vdisplaced as they arewhen severed by roller cutters or blades running lengthwise of thedirection of cut. The guide toe g moves in engagement with the pipe inadvance of the cutter and, being thinner, or at most, no thicker thanthe breadth of the cutting` edge oftool E, will freely enter the grooveformed by the "tool without binding and permit the tool to remove acontinuous shaving of unifornfi thickness, progressivelyV cutting deeperas the tool is revolved, until `the pipe issev ered. After the tool hasbeen adjusted to the desired depth of cut, it will cut to that depth,and no more, without attention on the part of the user. 'lhe leveragenecessary to force the tool into cutting engagement with the pipe isexerted by the handle D, acting through pivot D as a fulcrum, which isbetween the pivoted end of the jaws and the cutting tool, the frictionon the pipe exerted by the jaws A and E being sufiicient to insure theswinging and holding of the tool E against the pipe.

The pipe cutter is adapted to pipes of various sizes by varying thespread of the jaws.

The broad supporting surface B', on the jaw opposed to the cutting tool,extends across the plane of the cutting tool, and so firmly supports thepipe opposite the tool, and counteracts any tendency of the thrust ofthe tool1 which is at one side of jaw A, to twist the pipe out of itsposition perpendicular to the cutting plane.

I claim:

1. A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, a handle fulcrumed to said jaws, and a cutting dle fulcrumedto said handle tool rigidly carried and actuated by said handle adaptedto be forced into cutting engagement with the pipe by swinging thehandle on its fulcrum.

2.. A pipe cutter comprising a pair of relatively movable pipe-engagingjaws, a pivoted toone of said jaws, a cutting tool rigidly fastenedtosaid handle and adapted to be forced into. vcutting engagementrwiththe pipe by swinging the handle onA its pivot, and a guard rigidlysecured to said handle adapted to bear on the pipe in advance of thecutting tool and limit the depth of cut thereof, and to follow thebottom o f the groove yformed by the cutting tool, whereby the cut maybe continuously formed and the pipe-,wholly severed by revolving theimplement upon the pipe without manual adjustment.

8'. A pipecutter comprising a pair of.

pipe-engaging jaws pivoted together, ahandle fulcrumed to said jaws, acutting tool actuated said handle adapted to be forced into engagementwith the pipe by swinging the'handle on itsfulcrum, and a guide alsoAactuated by the handle adapted to bear on the pipe in advance of thetool, said tool and guide being relatively adjustable to vary the" depthof the cut.

4. A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, alianjaws, a cutting tool actuated by said handle adapted tobe forced intoengagement with the pipe by swinging the handle on itsfulcrum, and a guide also actuated by the handle adapted to bear on thepipe in advance of the tool, said guide A being .Hxed on the handle, andsaidvtool being adjustable depth of the cut.

5. A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, ahanv jaws, a cutting tool actuated by said handle adapted tobe forced into engagement with the pipe by swinging the handle on itsfulcrum, and a guide also actuated bythe handle adapted to bear on onthe handle to vary the the pipe in advance of the tool, said guide beingnarrower than the breadth of the cutting edge of the tool whereby theguide will move freely along the groove formed by the tool.

6. A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, a handle fulcrumed to said jaws, and a cutting tool carried bysaid handle, the fulcrum of the handle being positioned between thepivoted end of the jaws and the cutting edge of the tool.

7 A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, a handle fulcrumed to said jaws having a laterally extendingarm, and a cutting tool mounted in said arm adapted to be forced intoengagement with the pipe by swinging the handle on its fulcrum.

8. A pipe-cutter comprising a pair of pipe-engaging jaws pivotedtogether, a handle fulcrumed to said jaws having a laterally extendingarm provided with a slot extending lengthwise of the device, and acutting tool and guide lodged in said slot, said cutting tool and guidebeing relatively adjustable.

Y 9. A pipe cutter comprising a pair of pipe-engaging jaws pivotedtogether, a handle fulcrumed to the side of one of said j aws, and acutting tool carried by said handle adapted to be forced into engagementwith the pipe by swinging the handle on its fulcrulm the jaw opposed tothe cutting tool having a pipe supporting surface which extends acrossthe plane of the cutting tool.

l0. A pipe cutter, comprising a pair of pipe engaging jaws, a handlefulcrumed to said jaws having a laterally extending arm provided with aslot extending lengthwise of the device, a cutting tool and guide lodgedin said slot, and relatively adjustable, means mounted on said handlefor adjusting said cutting tool. and means mounted on said arm to holdsaid tool and guide in adjusted position.

Signed by me at Boston, ldassachusetts, this first day of May 1914.

' HARRISON H. EATON.

Copies-of this patent may be obtained for five cents each, by addressingthe Commissioner (f Patents,

' Washington, D. C.

